Regent Ceramic Hermetico Manual Coffee Grinder has a ceramic grinding mechanism that ensures consistent grind size and avoids the metallic taste sometimes associated with metal burr grinders, resulting in a smoother and more flavorful cup of coffee. Hermetico seal keeps your coffee grounds fresh and protected from air and moisture, preserving their aroma and volatile oils for a superior taste. It offers a more hands-on and engaging coffee brewing experience, allowing you to control the grind size and appreciate the ritual of grinding your beans.